A hospital bed includes a base, a lifting mechanism, a rotating frame configured to rotate horizontally relative to the base, and a patient support surface pivotally secured to the rotating frame. The patient support surface includes a back section, a seat section, and foot section that articulate relative to each other. The patient support surface translates from a bed configuration to a side-egress chair or stand assist configuration. The foot section includes a plurality of panels configured to move relative to each other in substantially parallel overlapping planes between an extended configuration and a retracted configuration when the patient support surface is in a chair or stand assist configuration. The foot section contacts a floor which causes the plurality of panels to move to the retracted configuration. Biasing members urge the plurality of panels to the extended configuration when the foot section no longer contacts the floor.
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1. A hospital bed, comprising:
a base comprising opposite end portions;
a lifting mechanism secured to the base between the end portions; and
a patient support surface pivotally secured to the lifting mechanism, wherein the patient support surface comprises a back section, a seat section, and a foot section configured to articulate relative to each other, and wherein the patient support surface is configured to translate from a bed configuration to a chair configuration;
wherein the foot section comprises first, second, third, fourth, and fifth panels operably connected together that are configured to move relative to each other in substantially parallel overlapping planes between an extended configuration when the patient support surface is in a bed configuration and a retracted configuration when the patient support surface is in a chair configuration, wherein the first, third and fifth panels move relative to each other in a first plane, and wherein the second and fourth panels move relative to each other in a second plane.
14. A method of translating a hospital bed to an egress configuration, wherein the bed comprises a base having opposite end portions, a lifting mechanism secured to the base between the end portions, and a patient support surface pivotally secured to the lifting mechanism, the method comprising:
articulating back, seat and foot sections of the patient support surface relative to each other from a substantially co-planar configuration to a chair configuration, wherein the foot section includes a plurality of panels that are configured to move relative to each other in substantially parallel overlapping planes between an extended configuration when the patient support surface is in a bed configuration and a retracted configuration when the patient support surface is in a chair configuration, wherein the foot section comprises first, second, third, fourth, and fifth panels operably connected together; and
contacting a floor surface with the foot section such that the first, third and fifth panels move relative to each other in a first plane, and such that the second and fourth panels move relative to each other in a second plane parallel to and over or under the first plane; and
forcing the plurality of panels to move to the retracted configuration in response to the floor contact.
2. The hospital bed of
3. The hospital bed of
4. The hospital bed of
a foot section base having opposite first and second sides;
a first section telescopically secured to the foot section base first side and movable relative to the foot section base between retracted and extended positions; and
a second section telescopically secured to the foot section base second side and movable relative to the foot section base between retracted and extended positions.
5. The hospital bed of
6. The hospital bed of
7. The hospital bed of
8. The hospital bed of
9. The hospital bed of
10. The hospital bed of
11. The hospital bed of
12. The hospital bed of
13. The hospital bed of
15. The method of
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This application claims the benefit of and priority to U.S. Provisional Patent Application No. 62/072,461 filed Oct. 30, 2014, and U.S. Provisional Patent Application No. 62/158,768 filed May 8, 2015, the disclosures of which are incorporated herein by reference as if set forth in their entireties.
The present invention relates generally to the field of hospital beds and, more specifically, to hospital beds that are convertible into a chair configuration.
Conventional hospital beds are configured to provide a sufficiently comfortable support surface for patients in a supine position. In many cases, it is desirable for patients to elevate from a supine position to a sitting position in order to increase the activity of the circulatory and cardiovascular systems and/or in the course of medical treatment. In addition, patients may be interested in sitting up in bed to be more comfortable, for example, in order to read or meet with visitors. However, it may be difficult for some patients to get out of a hospital bed. As such, hospital beds that can be converted into chair-like configurations have been developed. In addition, hospital beds that can assist patients in moving from a supine position to a sitting position for the purpose of achieving a standing or walking position have also been developed.
According to some embodiments of the present invention, a hospital bed that can be converted to a chair configuration includes a base having opposite end portions, a lifting mechanism secured to the base between the end portions, and a patient support surface pivotally secured to the lifting mechanism. The patient support surface is configured to support a mattress thereon. The lifting mechanism is configured to raise the patient support surface and mattress relative to the base to a stand-assist configuration to facilitate egress by a patient. A rotating frame is mounted on the lifting mechanism and is configured to rotate horizontally relative to the base. The patient support surface is pivotally secured to the rotating frame and the patient support surface is configured to translate from a bed configuration to a side-egress chair configuration.
The patient support surface can include a back section, a seat section, and a foot section that are configured to articulate relative to each other. The patient support surface can be configured to translate from a bed configuration to a chair or stand assist configuration. The foot section includes a plurality of panels that are configured to move relative to each other in substantially parallel overlapping planes between an extended configuration and a retracted configuration. The foot section is configured to engage a floor surface when the patient support surface is in a chair configuration, and the engagement with the floor surface causes the plurality of panels to move to the retracted configuration. The foot section can include one or more biasing members, such as springs, that are configured to urge the plurality of panels to the extended configuration when the foot section is not engaged with the floor surface.
In some embodiments of the present invention, the foot section includes first, second, third, fourth, and fifth panels operably connected together. The first, third and fifth panels move relative to each other in a first one of the planes, and the second and fourth panels move relative to each other in a second one of the planes. The foot section includes a frame assembly that has a base with opposite first and second sides. A first section is telescopically secured to the base first side and is movable relative to the base between retracted and extended positions. A second section is telescopically secured to the base second side and is movable relative to the base between retracted and extended positions. The base includes one or more biasing members that are configured to urge the first and second sections of the frame assembly outwardly from the base to respective extended positions.
In some embodiments, the frame assembly first and second sections each include a plurality of spaced-apart elongated legs that are telescopically secured to the base. The base includes a respective plurality of biasing members associated with the first section legs that are configured to urge the first section outwardly from the base to a respective extended position. The base also includes a respective plurality of biasing members associated with the second section legs that are configured to urge the second section outwardly from the base to a respective extended position.
The first panel can be secured to the frame assembly first section, the third panel can be secured to the frame assembly base, and the fifth panel can be secured to the frame assembly second section. The second panel can be slidably secured to the first and third panels, and the fourth panel can be slidably secured to the third and fifth panels.
The frame assembly second section can be pivotally secured to the seat section and an actuator is configured to move the foot section between a substantially co-planar configuration relative to the seat section and a substantially orthogonal configuration relative to the seat section.
In some embodiments, the frame assembly first section includes at least one rolling member or wheel that is configured to contact the floor surface and roll along the floor surface as the foot section is moved to a substantially orthogonal configuration relative to the seat section.
According to other embodiments of the present invention, a method of translating a hospital bed to an egress configuration includes articulating back, seat and foot sections of a patient support surface relative to each other from a substantially co-planar configuration to a chair configuration. The foot section includes a plurality of panels that are configured to move relative to each other in substantially parallel overlapping planes between an extended configuration when the patient support surface is in a bed configuration and a retracted configuration when the patient support surface is in a chair configuration. The foot section contacts a floor surface to cause the plurality of panels to move to the retracted configuration.
In some embodiments, the foot section includes first, second, third, fourth, and fifth panels operably connected together. Contacting the floor surface with the foot section causes the first, third and fifth panels to move relative to each other in a first one of the planes, and causes the second and fourth panels to move relative to each other in a second one of the planes. In some embodiments, the back, seat and foot sections are rotated 90 degrees to a side egress position prior to contacting the floor surface with the foot section.
In some embodiments, some of the foot section panels include one or more mattress support members. As the foot section panels are moved to a retracted configuration, the mattress support members move closer together thereby causing a portion of a mattress secured thereto to move to a retracted configuration.
It is noted that aspects of the invention described with respect to one embodiment, may be incorporated in a different embodiment although not specifically described relative thereto. That is, all embodiments and/or features of any embodiment can be combined in any way and/or combination. These and other objects and/or aspects of the present invention are explained in detail in the specification set forth below.
The accompanying drawings, which form a part of the specification, illustrate embodiments of the present invention. The drawings and description together serve to fully explain the invention.
The present invention will now be described more fully hereinafter with reference to the accompanying figures, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Like numbers refer to like elements throughout. In the figures, certain components or features may be exaggerated for clarity, and broken lines may illustrate optional features or elements unless specified otherwise. In addition, the sequence of operations (or steps) is not limited to the order presented in the figures and/or claims unless specifically indicated otherwise. Features described with respect to one figure or embodiment can be associated with another embodiment or figure although not specifically described or shown as such.
It will be understood that when a feature or element is referred to as being “on” another feature or element, it can be directly on the other feature or element or intervening features and/or elements may also be present. In contrast, when a feature or element is referred to as being “directly on” another feature or element, there are no intervening features or elements present. It will also be understood that, when a feature or element is referred to as being “connected”, “attached” or “coupled” to another feature or element, it can be directly connected, attached or coupled to the other feature or element or intervening features or elements may be present. In contrast, when a feature or element is referred to as being “directly connected”, “directly attached” or “directly coupled” to another feature or element, there are no intervening features or elements present. Although described or shown with respect to one embodiment, the features and elements so described or shown can apply to other embodiments.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items and may be abbreviated as “/”.
As used herein, phrases such as “between X and Y” and “between about X and Y” should be interpreted to include X and Y. As used herein, phrases such as “between about X and Y” mean “between about X and about Y.” As used herein, phrases such as “from about X to Y” mean “from about X to about Y.”
Spatially relative terms, such as “under”, “below”, “lower”, “over”, “upper” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of a device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is inverted, elements described as “under” or “beneath” other elements or features would then be oriented “over” the other elements or features. Thus, the exemplary term “under” can encompass both an orientation of over and under. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Similarly, the terms “upwardly”, “downwardly”, “vertical”, “horizontal” and the like are used herein for the purpose of explanation only unless specifically indicated otherwise.
It will be understood that although the terms first and second are used herein to describe various features or elements, these features or elements should not be limited by these terms. These terms are only used to distinguish one feature or element from another feature or element. Thus, a first feature or element discussed below could be termed a second feature or element, and similarly, a second feature or element discussed below could be termed a first feature or element without departing from the teachings of the present invention.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the specification and relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein. Well-known functions or constructions may not be described in detail for brevity and/or clarity.
The term “about”, as used herein with respect to a value or number, means that the value or number can vary more or less, for example by +/−20%, +/−10%, +/−5%, +/−1%, +/−0.5%, +/−0.1%, etc.
As used herein, the terms “comprise”, “comprising”, “comprises”, “include”, “including”, “includes”, “have”, “has”, “having”, or variants thereof are open-ended, and include one or more stated features, integers, elements, steps, components or functions but does not preclude the presence or addition of one or more other features, integers, elements, steps, components, functions or groups thereof. Furthermore, as used herein, the common abbreviation “e.g.”, which derives from the Latin phrase “exempli gratia,” may be used to introduce or specify a general example or examples of a previously mentioned item, and is not intended to be limiting of such item. The common abbreviation “i.e.”, which derives from the Latin phrase “id est,” may be used to specify a particular item from a more general recitation.
Referring to
The illustrated bed 10 has a patient support surface 18 configured to support a mattress M (
The patient support surface 18 is supported by the rotating frame 14 and includes a back section 20, a seat section 22, and a foot section 24. The back section 20, seat section 22 and foot section 24 can articulate with respect to each other and can be serially hinged or otherwise movably secured together, as illustrated. The back section 20 and seat section 22 can be pivotally attached to each other by pins, hinges, or other suitable mechanisms well known in the art. The seat section 22 and foot section 24 can also be pivotally attached to each other by pins, hinges, or other suitable mechanisms well known in the art.
In some embodiments, hospital bed 10 may have a patient support surface 18 that can be articulated into a chair configuration without rotating to a side egress position. For example, the patient support surface 18 articulates as described herein to a chair or stand assist configuration such that a patient can egress from the foot of the bed 10.
A mattress M (
Still referring to
The patient support surface 18 can be secured to the rotating frame 14 in various ways, for example via one or more of a transverse rod or pin connection 36 to facilitate tilting of the patient support surface 18 relative to the rotating frame 14. The rotating frame 14 can be secured to the base 12 via a lift mechanism 50, such as a double scissors lift, etc. The lift mechanism 50 is configured to raise and lower the patient support surface 18, via the rotating frame 14, relative to the base 12. The lift mechanism 50 can be driven by hydraulic cylinders, air cylinders, air bags, and/or electrical or electromechanical devices, etc. The lift mechanism 50 can be configured to allow the patient support surface 18 to be raised relatively high relative to the base 12 and to be lowered relatively low with respect to the base 12, as described above. See, e.g., U.S. Pat. No. 7,788,748 for examples of rotational and lift components, which is incorporated herein by reference in its entirety.
The foot section 24 may also be referred to as a “leg” section. Thus, the terms “foot section” and “leg section” are used interchangeably herein. The foot section 24 is pivotally connected to the seat section 22 of the articulating patient support surface 18, for example, via one or more hinges 38 (
Referring now to
The illustrated foot section 24 includes a frame assembly 70 (
The illustrated frame assembly first section 74 includes a pair of spaced-apart elongated legs 74a, 74b that are telescopically secured within respective receiving members 73a, 73b of the base 72. The receiving members 73a, 73b can be tubular as shown with a rectangular shape corresponding to the legs 74a, 74b, but other shapes can be used. Each receiving member 73a, 73b can include a biasing member 75, such as a spring, that is associated with a respective one of the legs 74a, 74b and that is configured to urge the frame assembly first section 74 outwardly from the base 72 to an extended position. In the illustrated embodiment, each leg 74a, 74b includes a guiding slot 74as, 74bs that is cooperatively engaged with a respective member, such as a rod or pin 73ap, 73bp in receiving members 73a, 73b.
The illustrated frame assembly second section 76 includes a pair of spaced-apart elongated legs 76a, 76b that are telescopically secured within respective receiving members 73c, 73d of the base 72. The receiving members 73c, 73d can be tubular as shown with a rectangular shape corresponding to the legs 76a, 76b, but other shapes can be used. Each receiving member 73c, 73d can include a biasing member 75, such as a spring, that is associated with a respective one of the legs 76a, 7b and that is configured to urge the frame assembly second section 76 outwardly from the base 72 to an extended position. In the illustrated embodiment, each leg 76a, 76b includes a guiding slot 76as, 76bs that is cooperatively engaged with a respective member, such as a rod or pin 73cp, 73dp in receiving members 73c, 73d.
The first panel 60a is secured to the frame assembly first section 74, the third panel 60c is secured to the frame assembly base 72, and the fifth panel 60e is secured to the frame assembly second section 76. The second panel 60b includes a first set of spaced-apart elongated slots 61a adjacent one edge portion 60b1 thereof, and a second set of spaced-apart elongated slots 61b adjacent one edge portion 60b2 thereof, as illustrated in
The slots closer to one edge portion of a panel may be longer than slots closer to the opposing edge portion of a respective panel, in some embodiments. In the illustrated embodiment, slots 61b are longer than slots 61a, and slots 64b in panel 60d are longer than slots 64a in panel 60d. In the illustrated embodiment, slots 61a and 61b are parallel and extend longitudinally, and slots 64a and 64b are parallel and extend longitudinally.
This configuration of slots 61a, 61b and respective rods or pins 62, 63 allows the first and third panels 60a, 60c to slide towards each other when the frame assembly first section 74 is moved to the retracted position. When the frame assembly first section 74 is moved to the retracted position, as illustrated in
The fourth panel 60d includes a first set of spaced-apart elongated slots 64a adjacent one edge portion 60d1 thereof, and a second set of spaced-apart elongated slots 64b adjacent one edge portion 60d2 thereof, as illustrated in
This configuration of slots 64a, 64b and respective rods 65, 66 allows the fifth and third panels 60e, 60c to slide towards each other when the frame assembly second section 76 is moved to the retracted position. When the frame assembly second section 76 is moved to the retracted position, as illustrated in
In the illustrated embodiment, as the frame assembly first and second sections 74, 76 are moved between extended and retracted positions, the first, third and fifth panels 60a, 60c, 60e move relative to each other in a first plane, and the second and fourth panels 60b, 60d move relative to each other in a second plane that is substantially parallel with the first plane. When viewed from above the foot section 24 (
Referring to
Referring to
Alternatively, the articulated patient support surface 18 can be rotated in an elevated configuration to a side egress position with the foot section 24 in the extended configuration (
In operation, the bed 10 can have the back section 20, seat section 22, and foot section 24 in a horizontal configuration, to support a patient in a supine position. To convert the bed 10 to a chair configuration, the back section 20, seat section 22 and foot section 24 articulate relative to each other as shown in
The transformation to a chair configuration can be carried out so that, the back section 20 and seat section 22 can be pivoted relative to each other (
Referring to
The cutouts 94 of panel 60b are arranged such that, when panel 60b overlies panel 60a when the foot section 24 is in a retracted configuration, the cutouts 94 provide room for the mattress support member fasteners B, as illustrated in
In the illustrated embodiment, mattress support members 100 are secured to panels 60a, 60c, 60e, for example, via fasteners B such as bolts or screws, etc. The mattress support members 100 are shown in phantom line in
Each mattress support member 100 can be configured to cooperate with an elongated clip 102 secured to or integral with a foot section of a mattress M, as illustrated in
In the drawings and specification, there have been disclosed typical preferred embodiments of the invention and, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being set forth in the following claims.
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